In 2007, scientists were on a mission in the Papahanaumokuakea Marine National Monument in the Hawaiian Islands. Their objective was to locate deep-sea coral beds. A submersible vessel ventured thousands of feet (thousands of meters) below the ocean's surface. To their surprise, scientists discovered seven new species of bamboo coral. These corals were a remarkable find and are important to ocean research. They will help scientists unravel mysteries about ecosystems. The coral beds will also reveal how ocean conditions, such as pollution, affect marine life. Do It!

The discovery was .

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A costly
B grisly
C fortunate
D unnecessary